I have several hundred epubs on my ipad mini 4 in ibooks (iPadOS 13 beta). They were all downloaded to the device. When I upgraded to beta 6- they all went back to the cloud icon (not downloaded).
Any reason this would occur? Any way to group download all again, so I don't have to do each one individually?
Also, hate to manually download them all again, if this will occur again for beta 7 or beyond.